Of all metals in pure form, tungsten heavy metal has the highest melting point (3,422 °C, 6,192 °F), lowest vapor pressure (at temperatures above 1,650 °C, 3,000 °F) and the highest tensile strength. Tungsten heavy metal also has the lowest coefficient of thermal expansion of any pure metal. Tungsten heavy metal needle is made of the material of tungsten. Therefore, it owns the physical and chemical properties of tungsten, which have been the unique characteristics of tungsten heavy needle.

Due to the properties of tungsten heavy metal needles, they can be used in some field to make a good use of tungsten heavy metal.
The diameter of some tungsten heavy metal needles is similar totungsten heavy metal electrodes. When the tungsten heavy metal electrode is thick enough, the products can be called tungsten heavy metal needle. And when the pure tungsten heavy metal wire is bold enough, the products can be called tungsten heavy metal needle after cutting into a set length. Therefore, tungsten heavy metal needle has some similar applications as tungsten heavy metal electrodes and tungsten heavy metal wire.

Tungsten heavy metal needles can be made into needles of flash lamp in camera, needles of sodium lamps and needles of halogen lamps and metal halide lamps. They also can be applied to welding. Another important application of tungsten heavy metal needle is to be used as material to purify the air.